Estimated difficulty: 3.5/10.

Estimated 100% time: ~12-18 hours.

Offline/online achievements: 35 offline / 0 online.

Number of playthroughs: 1 full, 2 partial. You need to play up until you arrive at the Hospital for the 2nd time for each of the girls final achievements. A quick runthrough to this section takes ~2 hours.

Bugged achievements: 0.

Missable Achievements: Any that aren't story related.

This will unlock the first time you open the game.

Ending Routes

Certain choices you make with the girls will dictate what route you put your game on. There's a route for Miyeong, Narsha, and Eunae, as well as a route for none of the girls. Make sure you put yourself onto one of the girls routes, as each of their endings requires a full playthrough.

Miyeong Route

• Talk to her when you first go to the Cafeteria. Any option works.
  
• Once you get home, interact with your phone and call her. No one else.
  
• Start the next day, take your first quiz, then talk with her. Choose "I watched 'Taejo King-gun', too!"
  
• Back in the Cafeteria, talk to her and choose "What can I get you?"
  
• When you talk to Joseph in the bathroom, tell him you like Miyeong.
  
• Back at home, call Miyeong. Choose "No, I'm only calling you" and "That's a secret...I can tell you tomorrow!"

This will unlock after the phone call.

• Continue through the intro section until you get poisoned and talk to Hoyoung. Choose "I want to stay."
  
• Go through your school days until you get placed in your classroom with Miyeong. She'll have a heart over her head.
  
• Talk to her and choose "Use logic to persuade!"
  
• Choose anywhere that isn't the amusement park.

This will unlock after your 3 dates.



Eunae Route

• Talk to Eunae in the Cafeteria after your exams. Choose "Eunae, how did you do on the test?"
  
• Once you get home, interact with your phone and call her. No one else.
  
• After your first exam the next day, talk to Eunae and choose any option.
  
• Back in the Cafeteria, talk to Eunae and choose "I've been following you!" You'd think this choice would be creepy, but oh well.
  
• When you talk to Joseph in the bathroom, tell him you like Eunae
  
• Back at home, call Eunae again. Choose "You seem to have a lot on your mind lately" and "Do you want to go to an art museum this weekend?"

This will unlock after the phone call.

• Continue through the intro section until you get poisoned and talk to Hoyoung. Choose "I want to stay."
  
• Go through your school days until you get placed in your classroom with Eunae. She'll have a heart over her head.
  
• Any option should work for the next 3 choices.

This will unlock after your 3 dates.



Narsha Route

• Talk to Narsha in the Cafeteria and choose "Cheer up, Narsha, you've got this."
  
• Once you get home, interact with your phone and call her. No one else.
  
• The next day, talk to Narsha after finishing your first exam. Choose "You've got other exams. Cheer up."
  
• Back in the Cafeteria, talk to her and choose "Of course! Anything for you!"
  
• When you talk to Joseph in the bathroom, tell him you like Narsha.
  
• Back at home, call Narsha and choose the "What? Did you work out?" and "Where do you go to the gym? Could I join you?" options.

This will unlock after the phone call.

• Continue through the intro section until you get poisoned and talk to Hoyoung. Choose "I want to stay."
  
• Go through your school days until you get placed in your classroom with Narsha. She'll have a heart over her head.
  
• When you interact with her, choose "I'm a man who doesn't give up."
  
• The next prompt doesn't matter. For the 2nd one, choose "Café"

This will unlock after your 3 dates.



Story related. Go through your school days until Vicious Sister finds you.



Story related. You'll run into him after escaping from Vicious Sister.



Note I-10 (Short handwriting on the last page, Yaesol
Continue through the linear hallways after meeting the School Noteman. It's just before the first portal.

Dokkaebi Market Map
Once you're in the market, exit the seafood building and run left until you see a notice board. The map is on it.












Story related. You'll first run into these shortly after entering Dokkaebi Market.



II-8 (This Realm, Dokkaebi
Inside the Residential Villa, to the right of room 202.












Note II-6 (The Puppet, Dokkaebi)
Inside the Butcher Storage.












Note II-4 (Dokkaebis, Dokkaebi)
Just outside of the Dokkaebi Apothecary.












Note I-1 (Hellion, Dokkaebi)
Inside the Apothecary, to the left of the save location.










It can also be under the counter, to the right of the Dokkaebi.












Story related. This will unlock after entering the Apothecary and talking to the Dokkaebi.



Note II-7 (The Outsiders, Dokkaebi)
Head into the Bakery Factory and go left.












Story related. This will occur while you're searching the market for ingredients.



Note II-3 (Goo-weet Potato, Dokkaebi)
On the left side of the Root Vegetable Shop.

Story related. This will unlock after buying the Plasmaserum and talking to the Noteman again.



Note I-9 (Final Thoughts, Nulyu Han)
Story related. You need to grab this from the locker before leaving the hospital.

Note I-1 (A Nation Divided in Two, Nulyu Han)
As soon as you enter The Cave, walk a few feet to the right. Impossible to miss.












Note III-1 (Excavation Report 1, Songreung Site)
After talking to the Noteman and going deeper into the cave, immediately go left past Room 2 (Fox Barracks).












Note III-10 (Regional Reports, Taiyono Kuma)
From the previous note, head right until you pass by a Miner Shade. Just before Room 3 (Oni Barracks) will be a hallway you can take up. Do so, then go right again to find the note near a vending machine.












The Caves Map
Head back to the door that leads to the Fox Barracks. To the right of it will be a path going up and one going down. Go down, then head left and enter the Research Lab (it has a sign of a vase getting cleaned to its left).












Note I-2 (Hwarang, Nulyu Han)
In the same room as the Caves Map.












Note III-5 (Excavation Report 5: Deeper, Deeper!
Exit the Research Lab and walk all the way left to trigger dialogue about the elevator. Head back to see a mannequin staring at you from a doorway. Once he shuts the door, head into the Western Engine Room to find the note.












Note III-2 (Excavation Report 2: What is This Place?)
Inside the File Room.












Note III-6 (Excavation Report 6: Unexpected Enemies)
Inside the CCC room.












Story related. This will unlock after accessing the lift.



Note III-3 (Excavation Report 3: The First Achievement
Inside Equipment Storage.












Note III-4 (Excavation Report 4: The Fortune and Glory
Outside of Equipment Storage, just before the door to the Overseer's Office.












Note I-5 (Furious Decision, Nulyu Han)
Story related. Inside the Overseer's Office.












Story related. This will unlock after reading the previous note.



Note III-9 (Torn Gendarmerie Records)
Near the password hint. To reach this location, go left from where you pulled out the blade.












Note I-3 (Banned Book and the 23th Hwarang-do, Nulyu Han)
To the left of the Buddha statue in the Excavation Point. To reach this location, go right from where you pulled out the blade.












Note III-8 (Torn Records from a Police)
In the room you need to unlock to escape the Excavation Point. Just before you use the Grappling Hook to escape.












Note III-7 (Excavation Report 7)
Inside the

Note VI-1 (Awakening from the Other Side, Youngho)
On the floor to the right, as soon as you emerge from the vent.












Police Station Map
On floor 1F, on your way to meet the Police Chief.












Story related. Enter the Security Room to the direct left of where you grabbed the map and interact with the screens.



Note VI-2 (A Twsited Friendship, Youngho)
Inside the 2F Interrogation Room.












Note VI-4 (Encounter with the Killer Song, Youngho)
Inside Evidence Storage.












Story related. Interact with the Chief in his Office.



Note IV-6 (Chief of Police, Unknown)
In the Chief's Office.












Story related. Both of these will unlock as you watch the cutscenes that play in the Cell Block.

Note V-1 (The Warning Letter, Alice)
In the 1F hallway, between the class 1-B doors.












Note I-7 (Necroblade, Nulyu Han)
Inside class 1-E.












Note V-6 (Request from another branch, Hyungbae)
Inside the Cafeteria.












Note V-2 (Memory Retention, Hyungbae)
In the Main Building Biology Lab.












Note V-3 (Shadow Telecom, Hyungbae)
In the Main Building Security Office.












Story related. This will unlock after the scene in the Main Building Security Office.



Note V-8 (The Ritual of the Great Gnashing, Hyungbae)
In the Underground Storage.












Note V-7 (The Gathering, Hyungbae)
In the Main Building Teacher's Lounge.












Note II-2 (Blood Gemstone, Dokkaebi)
In the hallway outside of the Main Building Staff Room.












Note V-4 (Relics, Hyungdae)
Inside Classroom 3-A. You'll need to find a note with the code on it to access this room. The note location and code is in the Main Building Underground Storage, 1725












Note I-6 (Ghosts Under the Red Moon, Nulyu Han)
Just outside of the 1F Eastern stairwell. Only appears after Dark Song starts chasing you.












Story related. This will unlock after luring Dark Song to the front of the school.

Story related. This will unlock after you leave the Room of Chalkboards.



Note V-5 (Wraith Slayer, Hyungbae)
On the floor as soon as you earn the previous achievement. Almost impossible to miss.












Note I-4 (What You Can and Can't Do, Nulyu Han)
Inside the Main Building Counseling Room.












Story related. This will unlock after finding the puzzle in Study Room A.

Hospital Map
As soon as you arrive at the hospital, take the first path you can (to the right of your safehouse door). The map will be in plain view as soon as you transition.












Note IV-1 (Request for external cooperation, Scorpius)
In the same hall as the map location, just outside of the first door to the Food Court.












Note IV-2 (The Fake Identity, Scorpius)
Inside the Food Court.












Note IV-5 (The Prologue, Scorpius)
On the far right side of the same room as the previous note - just past the door to the staircase to the Parking Lot.












Hardware Store Key
From the previous note, go upstairs and head a few steps to the right. Open the suitcase to find this item. We're going to need it for an achievement.

Note II-9 (About the Shades, Dokkaebi)
Head into the hospital's Parking Lot and take the portal to the market. As soon as you arrive, look a few feet to your left.












Hardware Store
Enter the Hardware Store and grab the Bakery Generator Room Key off of the far right wall. There's nothing else we can do in here yet, this is just to avoid unnecessary backtracking.












Note II-5 (Songreung "Dokkaebi" Marketplace, Dokkaebi)
Inside the Apothecary.












Note II-10 (The Way Out??, Dokkaebi)
Inside the Go Café, next to the Karaoke room.












Go to the flower shop and enter through the double doors. Talk to Joseph.












Necklaces
We now have to go find a necklace that spawns in different places depending on which girl's path you're on.

• Miyeong's necklace spawns in the Sehwa Hospital exactly where you got the Hardware Store Key. It will be in a yellow handbag on a green bench. You can get back to the hospital through the portal at the Street Food Area.
  
• Eunae's necklace spawns in the Police Station. To get there, go to the Bakery Generator Room (see the image below in the "Returning to School" section) and warp back to the School. Then, go to the Room of Chalkboards to find the portal to the Police Station. Go to the Parking Lot and search the headlight of the first car.
  
• Narsha's necklace spawns in the Cave and is by far the most annoying to retrieve. The fastest way to get back to the Cave is to go back to the Hospital and take the portal outside of your safehouse. Once there, head to the Eastern Generator Room and backtrack to where you originally grabbed the sword. You'll have to be quick as there will be a bunch of warriors spawning, as well as Hyungbae hunting you. I recommend having a sword charge for the way back, as you'll need to open a locked door and it's slow.

Once you've retrieved one of the necklaces, go back to the Hardware Store and talk to the Shadows inside to repair it. You'll need the Homemade Juice in order for the woman to repair the necklace.



Returning to School
Now that you have a repaired necklace, head back to the School by going to the Bakery Engine Room.

Note V-9 (The Boss, Hyungbae)
After grabbing the Bakery Generator Room Key in the market, head to that room on the map and unlock it. Inside will be a porta that will take you to the Headmaster's Room at the school. The note is on the table.












Note V-10 (Solution, Hyungbae)
Head back to the Computer Lab and go to the right side of the room. Go through the door on the far right wall. The note will be in this storage room.












Now, locate the girl who's path you're on and give them the necklace.

• Miyeong in in the Main Building Old Storage Room.
  
• Eunae is in the Main Building Medical Center.
  
• Narsha is in the Main Building 4F Women's Bathroom.

Note IV-3 (Sehwa Hospital, Scorpius)
In the same hall as the Hardware Store Key. Directly in front of the Information Desk.












Story related. From the reception desk, continue left a few feet and you'll automatically talk to the Notekid.












Note IV-4 (Why Goals Fail, Scorpius)
In Doctor's Office I.












Note VI-3 (Meet the Noteman, Unknown)
In Doctor's Office II












Note IV-8 (Puppet! Killer Nurse, Scorpius)
Inside the File Room.












Note IV-6 (Has the Monster turned good? Scorpius)
After using the keycard to open the SW door in the yellow hallway, take the portal to the Isolation Ward. From there, enter the last door on the far right side of the hall. The note is in that room.












Note IV-7 (The Man entrusted with the dirty work, Scorpius)
Inside the Emergency Room.












Note IV-9 (Three Missions, Scorpius)
Outside of the Stockroom. Appears after you've collected all of the items for the Notekid.

POINT OF NO RETURN

Once you enter the Stock Room and repair the stuffed animal, the portals leading back to other areas will become inaccessible. Make sure you've done everything up until this point!

Story related. This will unlock after performing surgery on a stuffed tiger.



Note IV-10 (Neighborhood Clean-up, Scorpius)
Near a stairwell to the left of the Information Desk. Only appears after you save Mina.












Note VI-10 (It's My Time to Help, Youngho)
In your safehouse.












Story related. This will unlock after meeting up with your Shadow.

Note VI-7 (Alice Who Felt to the Rabbit Hole, Youngho)
Inside the Male Locker Room.












Note VI-5 (Unexpected Freedom, Unknown)
From the previous note, go left and enter the door to find the showers. The note is to the right.












Story related. Exit the Male Locker Room and head left to the Female locker Room. Go inside.



Note VI-8 (Friendship, Youngho)
Inside the shower area of the Female Locker Room.












Note I-8 (Between the Real World and the Otherworld, Nulyu Han)
In the Front Hallway Storage Room.












Note VI-9 (You are Me, Youngho)
In the Front Hallway Waiting Room.












If you've been following the guide, this will unlock after grabbing the previous note.

Story related. This will unlock after confronting Viscous Sister in the gym.



Story related. This will unlock for completing the game and watching the after-credits cutscene.

Dokkaebi Medicine
Plasmaserum


Real Estate Lock
4567


Vendor Trading

• Talk to the Vegetable Vendor in the Go Café Office

• Grab the Mini Radio from the Pig Feet Restaurant.
  
• Grab the Rotten Crab Meat from a table in the Crab House.
  
• Grab the Clay Potato and the Goo-weet Potato from the Root Vegetable Shop.
  
• Trade the Mini Radio to the Vegetable Vendor for the Devil's Apple.
  
• Talk to the Street Food Seller inside the 15th Entrance.

• Trade the Crab Meat, Potato, and the Devil's Apple to the Street Food Seller for the Fried Camel Cricket, Rice Cake Skewer, and the Dalgona.
  
• Trade the Fried Cricket, Rice Cake Skewer, and Dalgona to the construction worker on the Go Café Rooftop for the Planer, Floral Handkerchief and the Broken Walkie-Talkie.
  
• Trade the Handkerchief, Walkie-Talkie and Planer to the Vegetable Vendor for the Mint Leaves, Rotten Tofu, and Homemade Juice (The juice is used near the end of the game).
  
• Finally, trade the Rotten Tofu to the Street Food Vendor for the Giant Silkworm Pupa.
  
  
  
  Hospital Locker
  62573
  
  
  Armory Lock
  Wave, Flower, Fire, Mountain
  
  
  
  
  
  
  
  
  
  
  
  Elevator Code
  051117*
  
  
  Case Lock
  3432
  
  
  The Caves Trading
  
  • Grab the Clay Potato and the Ghost Sweet Potato from the chopped up mannequins to the left of where you get the lock hint.
    
  • Trade both potatoes to the Buddha statue for a Spanner and a Grappling Hook.
  
  
  Cell Block Code
  7358*
  
  
  Classroom Codes
  3-A: Note is found in the Main Building Underground Storage. Code is 1735.
  3-E: Note is found the Main Building Biology Lab. Code is 7981.
  3-F: Note is found in the Main Building Staff Room. Code is 2868.
  
  
  Computer Lab Puzzle
  
  • Follow the wires to Study Room A and interact with all 3 monitors.
    
  • Go to the 4F Women's Restroom and talk to Narsha. Leave immediately.
    
  • Go to the 3F Old Storage Room and talk with Miyeong.
    
  • Go to the 2F Staff Room and locate the OMR Card in one of the drawers. Bring it back to Miyeong so she stops chasing you.
    
  • Go to the 1F Medical and talk to Eunae, then search the room for 6 scraps of paper.
    
  • Return to 4F Study Room A.
    
  • Type 920318 into the blue monitor.
    
  • Type 780263 into the red monitor.
    
  • Type 806721 into the green monitor.
  
  
  Hospital Phone Call
  
  • Something's wrong with her brain
    
  • I'm resident Dae-haeng Lee
  
  
  Locker Combinations
  
  • Left-most - 0821
    
  • Middle-left - 0709
    
  • Middle-right - 0713
    
  • Right-most - 0713